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Using an extended set of equations of state and a multiple-group multiple-code collaborative effort to generate waveforms, we improve numerical-relativity-based data-analysis estimates of the measurability of matter effects in neutron-star…

Constraints set on key parameters of the nuclear matter equation of state (EoS) by the values of the tidal deformability, inferred from GW170817, are examined by using a diverse set of relativistic and non-relativistic mean field models.…

We introduce a computational framework, Bayesian Evidence calculation fOr Model Selection (BEOMS) to evaluate multiple Bayesian model selection methods in the context of determining the equation of state (EOS) for cold neutron star (NS),…

广义相对论与量子宇宙学 · 物理学 2025-12-29 Rahul Kashyap , Ish Gupta , Arnab Dhani , Monica Bapna , Bangalore Sathyaprakash

Exploiting a very large library of physically plausible equations of state (EOSs) containing more than $10^{7}$ members and yielding more than $10^{9}$ stellar models, we conduct a survey of the impact that a neutron-star radius measurement…

高能天体物理现象 · 物理学 2019-08-16 Lukas R. Weih , Elias R. Most , Luciano Rezzolla

It is of great interest to understand the equation of state (EOS) of the neutron star (NS), whose core includes highly dense matter. However, there are large uncertainties in the theoretical predictions for the EOS of NS. It is useful to…

核理论 · 物理学 2023-07-05 Wenjie Zhou , Jinniu Hu , Ying Zhang , Hong Shen

We have attempted to mitigate the challenge of connecting the neutron star (NS) properties with the nuclear matter parameters that describe equations of state (EoSs). The efforts to correlate various neutron star properties with individual…

核理论 · 物理学 2023-12-13 N. K. Patra , Prafulla Saxena , B. K. Agrawal , T. K. Jha

The equation of state (EoS) of neutron matter plays a decisive role to understand the neutron star properties and the gravitational waves from neutron star mergers. At sufficient densities, the appearance of hyperons generally softens the…

核理论 · 物理学 2025-02-21 Hui Tong , Serdar Elhatisari , Ulf-G. Meißner

Measurements of neutron star mass and radius or tidal deformability deliver unique insight into the equation of state (EOS) of cold dense matter. EOS inference is very often done using generalized parametric or non-parametric models which…

高能天体物理现象 · 物理学 2024-03-25 Chun Huang , Geert Raaijmakers , Anna L. Watts , Laura Tolos , Constança Providência

The increasing richness of data related to cold dense matter, from laboratory experiments to neutron-star observations, requires a framework for constraining the properties of such matter that makes use of all relevant information. Here, we…

高能天体物理现象 · 物理学 2020-01-08 M. Coleman Miller , Cecilia Chirenti , Frederick K. Lamb

We use a Bayesian inference analysis to explore the sensitivity of Taylor expansion parameters of the nuclear equation of state (EOS) to the neutron star dimensionless tidal deformability ($\Lambda$) on 1 to 2 solar masses neutron stars. A…

核理论 · 物理学 2020-10-28 C. Y. Tsang , M. B. Tsang , Pawel Danielewicz , W. G. Lynch , F. J. Fattoyev

We perform new longterm (15-16 orbits) simulations of coalescing binary neutron stars in numerical relativity using an updated Einstein's equation solver, employing low-eccentricity initial data, and modeling the neutron stars by a…

广义相对论与量子宇宙学 · 物理学 2015-04-01 Kenta Hotokezaka , Koutarou Kyutoku , Hirotada Okawa , Masaru Shibata

We obtain posterior distribution of equations of state (EOSs) across a broad range of density by imposing explicitly the constraints from precisely measured fundamental properties of finite nuclei, in combination with the experimental data…

核理论 · 物理学 2024-06-03 Anagh Venneti , Sakshi Gautam , Sarmistha Banik , B. K. Agrawal

The next generation of ground-based gravitational-wave detectors, Einstein Telescope (ET) and Cosmic Explorer (CE), present a unique opportunity to put constraints on dense matter, among many other groundbreaking scientific goals. In a…

We confront observational data from gravitational wave event GW170817 with microscopic modeling of the cold neutron star equation of state. We develop and employ a Bayesian statistical framework that enables us to implement constraints on…

核理论 · 物理学 2018-08-15 Yeunhwan Lim , Jeremy W. Holt

Neutron star observations, including direct mass and radius measurements as well as the analysis of gravitational wave signals emitted by stellar mergers, provide valuable and unique insights into the properties of strongly interacting…

核理论 · 物理学 2019-02-20 Aleksi Vuorinen

Over the past decade, an abundance of information from neutron-star observations, nuclear experiments and theory has transformed our efforts to elucidate the properties of dense matter. However, at high densities relevant to the cores of…

高能天体物理现象 · 物理学 2025-10-10 Sunny Ng , Isaac Legred , Lami Suleiman , Philippe Landry , Lyla Traylor , Jocelyn Read

The equation of state (EOS) of dense nuclear matter is a key factor to determine the internal structure and properties of neutron stars. However, the EOS of high-density nuclear matter has great uncertainty mainly because the terrestrial…

核理论 · 物理学 2023-12-27 Zehan Wu , Dehua Wen

We contribute a publicly available set of tables and code to provide Equations of State (EoS) for matter at neutron star densities. Our EoSes are constrained only by input from hadron physics and fundamental principles, without feedback…

广义相对论与量子宇宙学 · 物理学 2021-03-24 Eva Lope Oter , Andreas Windisch , Felipe J. Llanes-Estrada , Mark Alford

Observations of neutron stars (NSs) by the LIGO-Virgo and NICER collaborations have provided reasonably precise measurements of their various macroscopic properties. In this paper, we employ a Bayesian framework to combine them and place…

高能天体物理现象 · 物理学 2021-05-26 Bhaskar Biswas , Prasanta Char , Rana Nandi , Sukanta Bose

The LIGO/Virgo collaboration has recently announced the direct detection of gravitational waves emitted in the coalescence of a neutron star binary. This discovery allows, for the first time, to set new constraints on the behavior of matter…

广义相对论与量子宇宙学 · 物理学 2018-04-17 Tiziano Abdelsalhin , Andrea Maselli , Valeria Ferrari